Draft chamber



FIG. 1 is a front perspective view of a first embodiment of a draft chamber of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line showing of draft chamber is included for the purpose of illustrating environment and forms no part of the claimed design. 

CLAIM We claim the ornamental design for a draft chamber, as shown and described. 